Comparison of the role of the sea club-rush Scirpus maritimus and the sea rush Juncus maritimus in terms of concentration, speciation and bioaccumulation of metals in the estuarine sediment

• Type: Article in International Scientific Journal
• Date: 2006

Authors

Marisa M R Almeida (Author) Other; Mucha, AP (Author) Other; Vasconcelos, MTSD (Author) Other

Journal

Title: Environmental Pollution

Vol. 142

Pages: 151-159

ISSN: 0269-7491

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 68 Citations

Scopus - 81 Citations

Other information

Authenticus ID: P-004-JSK

DOI: 10.1016/j.envpol.2005.09.002

Abstract (EN): The capability of Scirpus maritimus and of Juncus maritimus to accumulate metals and the role of each plant on the physico-chemical composition of sediments, from Douro river estuary (NW Portugal), were investigated through a year of plants' life. The contents of Al, Cd, Cr, Cu, Fe, Mn, Ni, Pb and Zn were determined (by atomic absorption spectrophotometry) in sediment, rhizosediments (those in contact with each plant roots and rhizomes) and different tissues of S. maritinius and of. J. maritimus. Both plants influenced the sediment composition (concentrating metals around its roots) and were able to bioaccumulate Cd, in spite of some seasonal variations in the metal levels in the system (both in rhizosediments and plants' roots). Therefore, both plants showed to have potential for Cd phytostabilization. S. maritimus could also concentrate Pb in its roots, probably by sorption on the root surface in (hydr)oxide forms, therefore, denoting capability for Pb phytostabilization.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 9